Home / 81,003.02-121,558.75-33,618.15

Finding the Fourth Proportional to 81,003.02, 121,558.75 and 33,618.15

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Solution

The fourth proportional to 81,003.02, 121,558.75 and 33,618.15 is: 50,449.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,003.02 : 121,558.75 = 33,618.15 : x
  2. Step 2: Convert to fraction form
    81,003.02/121,558.75 = 33,618.15/x
  3. Step 3: Cross multiply
    81,003.02x = 121,558.75 × 33,618.15
  4. Step 4: Simplify right side
    81,003.02x = 4,086,580,207.27
  5. Step 5: Solve for x
    x = 4,086,580,207.27/81,003.02
  6. Step 6: Final answer
    x = 50,449.73

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.